Leak detection device

Abstract

The utility model provides a leak detection device. The leak detection device comprises a movable plate and a plurality of detection parts, the multiple detection components are arranged on the movable plate at intervals, each detection component is rotatably arranged around the central axis of the detection component, each detection component is movably arranged in the extending direction of the detection component, an air channel is formed in each detection component, one end, in the moving direction of the detection component, of each detection component is a matching end, and the other end, in the moving direction of the detection component, of each detection component is a clamping end. The matching end is provided with an air outlet communicated with the air channel, a sealing structure is arranged at the air outlet, and the detection part is tightly matched and connected with the to-be-detected part through the sealing structure so as to carry out leak detection and blockage detection on the to-be-detected part, so that the problems that in the prior art, the detection efficiency of blockage detection and leak detection on an infusion catheter of an infusion apparatus is low, and the detection efficiency is low are solved. And errors are easy to occur.

Description

Technical Field

[0001] The utility model relates to the technical field of medical detection equipment, in particular to a leakage detection device. Background Art

[0002] At present, infusion sets are one of the most important and widely used medical devices in the medical industry. Generally, infusion sets mainly include puncture sets, liquid filter, drip bucket, flow regulator, infusion catheter and other components. Most of these components need to be assembled by bonding, and their air tightness requirements are quite high. In order to ensure that there will be no leakage or damage between the components, it is generally necessary to test the blockage and leakage of the infusion set, and test the bonding of small parts and the integrity of the components to ensure the safety of clinical use.

[0003] However, in the prior art, the detection of infusion set blockage and air leakage generally adopts the infusion tube internal inflation detection. The inflation detection device generally includes a pressure sensor, a pressure regulating valve, a pressure reducing valve, an inflation solenoid valve, an air inlet joint, etc. When performing internal inflation detection, first connect the joint at one end of the infusion tube with the inflation interface, and clamp the catheter at the other end, and start the inflation device to inflate the infusion set catheter at the same time. The inflation is completed within the set time, so that the inside of the infusion tube is filled with gas to maintain the pressure. After maintaining the pressure for a period of time, the clamping end is released to release the pressure inside the infusion catheter. The blockage and leakage of the infusion catheter are judged by observing the changes in the pressure gauge numbers during the pressure maintenance and pressure relief process. However, the above-mentioned entire detection process is completed by manual operation of the staff. When the staff is tired, it is easy for the joint at one end of the infusion tube to be loosely connected with the inflation joint, resulting in air leakage and liquid leakage. In addition, the labor intensity is high and the staff is prone to errors when maintaining and releasing pressure, which leads to low detection efficiency and easy errors. Utility Model Content

[0004] The main purpose of the utility model is to provide a leak detection device to solve the problems in the prior art of low detection efficiency and easy error in detecting blockage and leakage of an infusion catheter of an infusion set.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a leakage detection device, comprising: a movable plate; a plurality of detection components, which are respectively arranged on the movable plate at intervals, each detection component is rotatably arranged around its central axis, and each detection component is movably arranged along its extension direction, each detection component has an air path channel, one end of the detection component along its moving direction is a mating end, the mating end has an air outlet connected to the air path channel, and a sealing structure is arranged at the air outlet, and the detection component is connected to the to-be-detected component through the sealing structure.

[0006] Furthermore, the leak detection device also includes: a plurality of connecting components, which are respectively connected to the plurality of detection components in a one-to-one correspondence; a plurality of guide sleeves, which are respectively arranged in a one-to-one correspondence with the plurality of connecting components, and the connecting components are telescopically arranged in the guide sleeves and rotatably arranged around the central axis of the guide sleeves, so as to drive the detection components to move along the extension direction of the guide sleeves and rotate around the central axis of the guide sleeves through the connecting components.

[0007] Furthermore, a spiral guide groove is provided on the guide sleeve along its extension direction and around the central axis of the guide sleeve, and a connecting protrusion is provided on the connecting component. The connecting protrusion is movably inserted into the spiral guide groove along the extension direction of the spiral guide groove, so that the connecting component drives the detection component to move along the extension direction of the guide sleeve and rotate around its own axis.

[0008] Furthermore, the leak detection device also includes: a plurality of first driving components, which are respectively arranged in one-to-one correspondence with the plurality of detection components; a plurality of first mounting plates, which are respectively arranged at intervals on the movable plate and in one-to-one correspondence with the plurality of guide sleeves, the driving end of the first driving component is connected to the floating joint, a first through hole is provided on the first mounting plate, the first through hole is connected to the guide sleeve, and the floating joint can be movably passed through the first through hole and the guide sleeve and then connected to the connecting component, so that the first driving component drives the connecting component to move to drive the detection component to move.

[0009] Furthermore, the leak detection device also includes: a second mounting plate, which is arranged on the movable plate; a plurality of fixed sleeves, which are respectively arranged at intervals on the second mounting plate, and a plurality of second through holes are provided on the second mounting plate, and each second through hole is connected to the plurality of fixed sleeves one by one, and the detection component can telescopically pass through the fixed sleeve and the second through hole, so that the detection component drives the air outlet to move along the extension direction of the fixed sleeve until it is connected with the part to be detected.

[0010] Furthermore, an air intake pipe joint is provided on the detection component, and the air intake pipe joint is located on one side of the detection component along its extension direction. The air intake pipe joint has an air inlet, and the air inlet is connected to the air path.

[0011] Furthermore, the sealing structure is a partial channel section of the air path channel close to the air outlet, and the opening diameter of the sealing structure gradually decreases along the inner edge of the detection component away from the air outlet.

[0012] Furthermore, the leak detection device also includes: a second driving component; a fixed seat, a movable plate is movably arranged relative to the fixed seat, and multiple detection components are respectively arranged on the movable plate, the driving end of the second driving component is connected to the connecting block, and the connecting block is connected to the movable plate, so that the movable plate is driven to move relative to the fixed seat by the second driving component, so as to drive the air outlets of the multiple detection components to move until they are respectively in contact with the multiple parts to be detected.

[0013] Furthermore, the leak detection device also includes: two guide rails, which are respectively arranged on the fixed seat at intervals; multiple sliders, which are respectively connected to the movable plate, and the multiple sliders are slidably arranged on the two guide rails along the extension direction of the guide rails, so that the second driving component drives the movable plate to move along the extension direction of the guide rails.

[0014] Furthermore, a movable groove is provided on the fixed seat, and the movable groove is located between the two guide rails. The connecting block passes through the movable groove and is connected to the movable plate. The connecting block is movably arranged along the extension direction of the movable groove, and the extension direction of the movable groove is parallel to the extension direction of the guide rail.

[0015] Furthermore, the leak detection device also includes: multiple control valves, which are respectively arranged in one-to-one correspondence with the multiple detection components; multiple pressure reducing valves, which are respectively arranged in one-to-one correspondence with the multiple control valves, one end of the pressure reducing valve is connected to the detection gas source, and the other end of the pressure reducing valve is connected to the control valve, and the control valve is connected to the air inlet on the detection component to control the gas pressure entering the detection component through the pressure reducing valve, and to control the on and off of the detection gas source through the control valve.

[0016] Furthermore, the leak detection device also includes: multiple pressure sensors, which are respectively arranged corresponding to multiple control valves, and each pressure sensor, each control valve and the air inlet on each detection component are connected through a three-way joint, and the pressure sensor is used to detect the gas pressure entering the detection component.

[0017] Applying the technical solution of the utility model, the leak detection device includes a movable plate and a plurality of detection components; the plurality of detection components are respectively arranged on the movable plate at intervals, each detection component is rotatably arranged around its central axis, and each detection component is movably arranged along its extension direction, each detection component has an air path channel, one end of the detection component along its moving direction is a mating end, the mating end has an air outlet connected to the air path channel, and a sealing structure is provided at the air outlet, and the detection component is connected to the to-be-detected component through the sealing structure. In the above-mentioned arrangement, the mating end is used to be matched and connected with the piece to be detected, and multiple pieces to be detected are clamped respectively. By controlling multiple detection components to rotate around their central axes and move along the extension direction of the detection components until each mating end is tightly matched and connected with the corresponding piece to be detected, the mating end of the detection component is matched and connected with the piece to be detected after rotation and movement, and the gap between the air outlet of the mating end and the opening of the piece to be detected is sealed by the sealing structure, so that the air outlet of the mating end is connected with the opening of the piece to be detected, thereby making the sealing effect between the detection component and the piece to be detected better, and preventing air leakage between the detection component and the piece to be detected, resulting in poor detection effect; and then controlling the detection air source to flow out from the air outlet through the air path channel and then flow into the piece to be detected, so that after the air pressure in the piece to be detected reaches a preset value, the detection air source is controlled to be disconnected, and then after a period of time, the change of the air pressure in the piece to be detected is detected, and then the leakage of the piece to be detected is known, so as to solve the problem of low detection efficiency and easy error in the prior art of detecting blockage and leakage of the infusion catheter of the infusion set. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 The overall structural diagram of the leakage detection device according to the embodiment of the utility model is shown;

[0020] Figure 2 It shows a structural schematic diagram of the first viewing angle after multiple detection components are assembled according to an embodiment of the leak detection device of the utility model;

[0021] Figure 3 It shows a structural schematic diagram of a second viewing angle after a plurality of detection components provided by an embodiment of the leak detection device of the utility model are assembled;

[0022] Figure 4 It shows a structural schematic diagram of a third viewing angle after a plurality of detection components provided by an embodiment of the leakage detection device of the utility model are assembled;

[0023] Figure 5A schematic diagram of the structure of a detection component after assembly according to an embodiment of the leakage detection device of the utility model is shown;

[0024] Figure 6 A schematic side view of an assembled detection component provided by an embodiment of the leak detection device of the utility model is shown;

[0025] Figure 7 Shows Figure 6 A schematic half-section view of a detection component after assembly.

[0026] The above drawings include the following reference numerals:

[0027] 1. Part to be tested; 10. Movable plate; 20. Testing component; 21. Air inlet; 22. Air outlet; 23. Air inlet pipe joint; 24. Air path; 25. Sealing structure; 26. Matching end; 30. First driving component; 31. Floating joint; 40. First mounting plate; 41. Connecting component; 410. Connecting convex part; 42. Guide sleeve; 420. Spiral guide groove; 50. Second mounting plate; 51. Fixed sleeve; 60. Second driving component; 61. Connecting block; 70. Fixed seat; 71. Guide rail; 72. Sliding block; 80. Control valve; 81. Pressure reducing valve; 82. Pressure sensor; 83. Three-way joint; 90. Clamping assembly; 91. Positioning hole; 92. First clamping component; 920. First arc groove; 93. Second clamping component; 930. Second arc groove; 94. Tooth structure. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] In order to solve the problems in the prior art of low efficiency and easy error in detecting blockage and leakage of an infusion catheter of an infusion set, the utility model provides a leak detection device.

[0030] Please refer to Figures 1 to 7 As shown, the leak detection device includes a movable plate 10 and a plurality of detection components 20; the plurality of detection components 20 are respectively arranged on the movable plate 10 at intervals, each detection component 20 is rotatably arranged around its central axis, and each detection component 20 is movably arranged along its extension direction, each detection component 20 has an air path 24 therein, one end of the detection component 20 along its moving direction is a mating end 26, the mating end 26 has an air outlet 22 connected to the air path 24, and a sealing structure 25 is provided at the air outlet 22, and the detection component 20 is connected to the component 1 to be detected through the sealing structure 25.

[0031] By applying the technical solution of this embodiment, the mating end 26 is used to be mutually matched and connected with the to-be-detected piece 1, and the multiple to-be-detected pieces 1 are clamped respectively, and the multiple detection components 20 are controlled to rotate around their central axes respectively and move along the extension direction of the detection components 20 until each mating end 26 is tightly matched and connected with the corresponding to-be-detected piece 1, so that the mating end 26 of the detection component 20 is matched and connected with the to-be-detected piece 1 after rotation and movement, and the gap between the air outlet 22 of the mating end 26 and the opening of the to-be-detected piece 1 is sealed by the sealing structure 25, so that the air outlet 22 of the mating end 26 is connected with the opening of the to-be-detected piece 1. The detection part 20 and the part to be detected 1 are connected, thereby making the sealing effect between the detection component 20 and the part to be detected 1 better, and preventing leakage between the detection component 20 and the part to be detected 1 from resulting in poor detection effect; and then controlling the detection gas source to flow out from the gas outlet 22 through the gas path 24 and then flow into the part to be detected 1, so that after the air pressure in the part to be detected 1 reaches a preset value, the detection gas source is controlled to be disconnected, and then after a period of time, the change of the air pressure in the part to be detected 1 is detected, and then the leakage of the part to be detected 1 is learned, so as to solve the problem of low detection efficiency and easy error in the prior art for detecting blockage and leakage of the infusion catheter of the infusion set.

[0032] like Figures 2 to 6 As shown, the leak detection device further includes a plurality of connecting components 41 and a plurality of guide sleeves 42; wherein the plurality of connecting components 41 are respectively connected to the plurality of detection components 20 in one-to-one correspondence; the plurality of guide sleeves 42 are respectively arranged in one-to-one correspondence with the plurality of connecting components 41, and the connecting component 41 is telescopically arranged in the guide sleeve 42 and rotatably arranged around the central axis of the guide sleeve 42, so as to drive the detection component 20 to move along the extension direction of the guide sleeve 42 and rotate around the central axis of the guide sleeve 42 through the connecting component 41. The above arrangement controls the detection component 20 to move along the extension direction of the guide sleeve 42 while rotating around the central axis of the guide sleeve 42, thereby driving the detection component 20 to move along the extension direction of the guide sleeve 42 while rotating, so that the air outlet 22 of the detection component 20 is tightly matched and connected with the opening of the to-be-detected part 1, so that the detection component 20 and the to-be-detected part 1 are tightly sealed, so as to reduce the problem of low detection accuracy caused by poor sealing effect between the detection component 20 and the to-be-detected part 1 when the to-be-detected part 1 is inflated for leak detection.

[0033] Specifically, a spiral guide groove 420 is provided on the guide sleeve 42 along its extension direction and around the central axis of the guide sleeve 42, and a connecting protrusion 410 is provided on the connecting component 41. The connecting protrusion 410 is movably arranged in the spiral guide groove 420 along the extension direction of the spiral guide groove 420, so that the connecting component 41 drives the detection component 20 to move along the extension direction of the guide sleeve 42 and rotate around its own axis. In the above arrangement, the connecting component 41 is movably arranged along the extension direction of the guide sleeve 42, so that when the connecting component 41 is controlled to move along the extension direction of the guide sleeve 42, the connecting protrusion 410 on the connecting component 41 moves along the extension direction of the spiral guide groove 420, so that the connecting component 41 moves along the extension direction of the guide sleeve 42 and also rotates around the central axis of the guide sleeve 42, thereby driving the detection component 20 to move in the opposite direction of the extension of the guide sleeve 42 and also rotate, so that the air outlet 22 of the detection component 20 is tightly connected with the opening of the part to be detected 1,

[0034] In this embodiment, the connecting protrusion 410 is a protruding portion of the connecting component 41 that is formed by a pin passing through the connecting component 41 along an axial direction perpendicular to the connecting component 41 .

[0035] Specifically, the leakage detection device also includes multiple first driving components 30 and multiple first mounting plates 40; wherein, the multiple first driving components 30 are respectively arranged in a one-to-one correspondence with the multiple detection components 20; the multiple first mounting plates 40 are respectively arranged at intervals on the movable plate 10 and are arranged in a one-to-one correspondence with the multiple guide sleeves 42, the driving end of the first driving component 30 is connected to the floating joint 31, and a first through hole is provided on the first mounting plate 40, and the first through hole is connected to the guide sleeve 42, and the floating joint 31 can be movably passed through the first through hole and the guide sleeve 42 and then connected to the connecting component 41, so that the first driving component 30 drives the connecting component 41 to move to drive the detection component 20 to move. In the above arrangement, a plurality of first mounting plates 40 are respectively arranged perpendicular to the movable plate 10, and a plurality of first driving components 30 are respectively located on a side of the first mounting plate 40 away from the detection component 20. The driving end of the first driving component 30 is connected to the connecting component 41 through a floating joint 31, and then the connecting component 41 is driven by the first driving component 30 to move along the extension direction of the guide sleeve 42 and rotate around its central axis, thereby driving the detection component 20 to move along the extension direction of the guide sleeve 42 and rotate at the same time to be tightly fitted with the detected component 1.

[0036] In this embodiment, the first driving component 30 is a driving cylinder.

[0037] Specifically, the leak detection device further includes a second mounting plate 50 and a plurality of fixed sleeves 51; wherein the second mounting plate 50 is arranged on the movable plate 10; the plurality of fixed sleeves 51 are arranged on the second mounting plate 50 at intervals, the second mounting plate 50 is provided with a plurality of second through holes and each second through hole is connected to the plurality of fixed sleeves 51 in a one-to-one correspondence, and the detection component 20 can telescopically pass through the fixed sleeve 51 and the second through hole, so that the detection component 20 drives the air outlet 22 to move along the extension direction of the fixed sleeve 51 to connect with the to-be-detected member 1. In the above arrangement, one end of the detection component 20 having the air outlet 22 can telescopically pass through the fixed sleeve 51 and the second through hole, so that the first driving component 30 drives the connecting component 41 to move so as to drive the detection component 20 to move along the extension direction of the fixed sleeve 51 and rotate around the central axis of the fixed sleeve 51, so that the air outlet 22 of the detection component 20 and the opening of the to-be-detected member 1 are tightly matched and connected under the action of the rotation and movement of the detection component 20.

[0038] In this embodiment, if Figure 2 As shown, the leak detection device also includes a plurality of constant pressure components, and the plurality of constant pressure components are respectively arranged in one-to-one correspondence with the plurality of detection components 20. The constant pressure component is arranged on a side of the second mounting plate 50 away from the fixed sleeve 51 and one end of the detection component 20 having an air outlet 22 passes through the constant pressure component, so that when the first driving component 30 drives the connecting component 41 to drive the detection component 20 to move, the constant pressure component enables the detection component 20 to move stably.

[0039] Specifically, the detection component 20 is provided with an air inlet pipe joint 23, which is located at one side of the detection component 20 along its extension direction, and the air inlet pipe joint 23 has an air inlet 21, which is connected to the air path channel 24. In the above arrangement, the air inlet 21, the air path channel 24 and the air outlet 22 are connected in sequence, and the air inlet pipe joint 23 is used to connect with the detection gas source, so that the detection gas flows from the air inlet 21 into the air path channel 24, and flows from the air outlet 22 into the to-be-detected component 1, so as to perform the air tightness detection operation of the to-be-detected component 1.

[0040] like Figure 7As shown, the sealing structure 25 is a partial channel section of the gas path 24 close to the gas outlet 22 , and the opening diameter of the sealing structure 25 gradually decreases in the direction away from the gas outlet 22 in the detection component 20 . According to the above arrangement, the inner wall surface of the sealing structure 25 is similar to a truncated cone structure. Since the opening diameter of the sealing structure 25 gradually decreases in the direction from the air outlet 22 to the air inlet 21, when the detection component 20 moves along the extension direction of the guide sleeve 42 and rotates around the central axis of the guide sleeve 42 to be mounted on the part to be detected 1, the inner wall surface of the sealing structure 25 guides the part to be detected 1. In addition, since the part to be detected 1 in this embodiment is made of flexible material, when the detection component 20 is simultaneously rotated and moved on the part to be detected 1, the outer wall surface of the part to be detected 1 with an opening is in close contact with the sealing structure 25 along the extension direction of the air path 24, so as to seal the gap between the air outlet 22 of the detection component 20 and the opening of the part to be detected 1, thereby realizing a close fitting connection between the detection component 20 and the part to be detected 1. At the same time, the detection component 20 and the part to be detected 1 are connected to each other, so as to perform blockage detection and leakage detection operations on the part to be detected 1.

[0041] Specifically, the leak detection device further includes a second driving component 60 and a fixed seat 70; wherein the movable plate 10 is movably arranged relative to the fixed seat 70, the driving end of the second driving component 60 is connected to the connecting block 61, and the connecting block 61 is connected to the movable plate 10, so as to drive the movable plate 10 to move relative to the fixed seat 70 through the second driving component 60, so as to drive the gas outlets 22 of the multiple detection components 20 to move to contact with the multiple parts to be detected 1 respectively. According to the above arrangement, when it is necessary to perform leak detection on the multiple parts to be detected 1 respectively, the movable plate 10 is first driven by the second driving component 60 to move relative to the fixed seat 70 and move to the gas outlets 22 of the multiple detection components 20 located on the movable plate 10 to contact with the openings of the multiple parts to be detected 1 respectively, and then the multiple detection components 20 are controlled to move along the extension direction of the guide sleeve 42 and rotate along the central axis thereof, so as to be closely matched and connected with the parts to be detected 1 respectively.

[0042] In this embodiment, the second driving component 60 is a driving cylinder.

[0043] Specifically, the leak detection device further includes two guide rails 71 and a plurality of sliders 72; wherein the two guide rails 71 are respectively arranged on the fixed seat 70 at intervals; the plurality of sliders 72 are respectively connected to the movable plate 10, and the plurality of sliders 72 are respectively arranged on the two guide rails 71 slidably along the extension direction of the guide rails 71, so that the second driving component 60 drives the movable plate 10 to move along the extension direction of the guide rails 71. In the above arrangement, the two guide rails 71 are arranged on the fixed seat 70 in parallel with each other, and the plurality of sliders 72 are respectively arranged on the two guide rails 71 slidably, so that the second driving component 60 drives the movable plate 10 to move along the extension direction of the guide rails 71 until the air outlets 22 of the plurality of detection components 20 contact with the openings of the plurality of parts to be detected 1 one by one, so as to facilitate the subsequent close fitting connection between the detection component 20 and the part to be detected 1.

[0044] Specifically, a movable groove is provided on the fixing seat 70, and the movable groove is located between the two guide rails 71. The connecting block 61 passes through the movable groove and is connected to the movable plate 10. The connecting block 61 is movably arranged along the extension direction of the movable groove, and the extension direction of the movable groove is parallel to the extension direction of the guide rail 71. According to the above arrangement, the second driving component 60 drives the connecting block 61 to move along the extension direction of the movable groove, thereby driving the movable plate 10 to move along the extension direction of the guide rail 71 until the air outlets 22 of the multiple detection components 20 located on the movable plate 10 are respectively in contact with the multiple parts to be detected 1.

[0045] Specifically, the leak detection device further includes a plurality of control valves 80 and a plurality of pressure reducing valves 81; wherein the plurality of control valves 80 are respectively arranged in one-to-one correspondence with the plurality of detection components 20; the plurality of pressure reducing valves 81 are respectively arranged in one-to-one correspondence with the plurality of control valves 80, one end of the pressure reducing valve 81 is connected to the detection gas source, the other end of the pressure reducing valve 81 is connected to the control valve 80, and the control valve 80 is connected to the air inlet 21 on the detection component 20, so as to control the pressure of the gas entering the detection component 20 through the pressure reducing valve 81, and control the on-off of the detection gas source through the control valve 80. The above arrangement adjusts the pressure of the detection gas source entering the detection component 20 through the pressure reducing valve 81, and then controls the conduction of the ventilation pipeline between the control valve 80 and the detection component 20 through the control valve 80, so that the detection gas source enters the detection component 20 from the air inlet 21 of the air inlet pipe joint 23, and then flows into the to-be-detected component 1 through the air outlet 22, so as to perform a leak detection operation on the to-be-detected component 1.

[0046] In this embodiment, the control valve 80 is a solenoid valve.

[0047] Specifically, the leak detection device further includes a plurality of pressure sensors 82, which are respectively arranged in one-to-one correspondence with the plurality of control valves 80, and each pressure sensor 82, each control valve 80 and the air inlet 21 on each detection component 20 are respectively connected by a three-way joint 83, and the pressure sensor 82 is used to detect the pressure of the gas entering the detection component 20. According to the above arrangement, when the pressure of the gas in the detection component 1 reaches a preset detection value after the detection gas source is introduced into the detection component 1, the control valve 80 is controlled to close the ventilation pipeline between the control valve 80 and the detection component 20, and the supply of detection gas to the detection component 1 is stopped. After a period of time, the pressure sensor 82 detects the change of the gas pressure value in the detection component 1, and then determines the leakage of the detection component 1, so as to realize the detection operation of the detection component 1.

[0048] In this embodiment, if Figure 1 As shown, the leak detection device also includes a clamping assembly 90; the clamping assembly 90 is arranged relative to the multiple detection components 20, and the clamping assembly 90 includes a plurality of positioning holes 91 arranged at intervals, and the multiple parts to be detected 1 are respectively and one by one inserted into the plurality of positioning holes 91, so that the positions of the multiple parts to be detected 1 are fixed relative to the multiple detection components 20; in this way, the clamping operation of the multiple parts to be detected 1 is realized through the plurality of positioning holes 91 on the clamping assembly 90.

[0049] Specifically, the clamping assembly 90 includes a first clamping component 92 and a second clamping component 93, the first clamping component 92 is provided with a plurality of first arc grooves 920, and the second clamping component 93 is provided with a plurality of second arc grooves 930, the plurality of first arc grooves 920 and the plurality of second arc grooves 930 are provided one-to-one, and the first clamping component 92 and the second clamping component 93 are provided in cooperation with each other, so that the first arc grooves 920 and the second arc grooves 930 form a positioning hole 91. In the above arrangement, the first clamping component 92 and the second clamping component 93 are relatively movably arranged, by setting the to-be-detected part 1 in the second arc groove 930 on the second clamping component 93, and controlling the first clamping component 92 to move to cooperate with the second clamping component 93, and then the first arc groove 920 and the second arc groove 930 cooperate with each other to form a positioning hole 91, so as to realize the clamping operation of the to-be-detected part 1.

[0050] Specifically, a plurality of tooth structures 94 are provided on the first clamping member 92 and the second clamping member 93, each first arc groove 920 is located at the top of each tooth structure 94 on the first clamping member 92, and each second arc groove 930 is located between two adjacent tooth structures 94 on the second clamping member 93. In the above arrangement, the plurality of tooth structures 94 on the first clamping member 92 and the second clamping member 93 are arranged side by side along their extension direction, respectively, and the first clamping member 92 and the second clamping member 93, which respectively have a plurality of tooth structures 94, are connected in a cooperative manner, and then a tooth structure 94 on the first clamping member 92 is inserted between two corresponding adjacent tooth structures 94 on the second clamping member 93, so that the first arc groove 920 on the top of the tooth structure 94 and the second arc groove 930 between the two corresponding adjacent tooth structures 94 cooperate with each other to form a positioning hole 91, so as to clamp and position the detected member 1.

[0051] In the present embodiment, the part to be detected 1 is an infusion tube of a disposable infusion set. Since the infusion tube is made of a flexible material, the detection component 20 is controlled to move along its extension direction and rotate around its own axis, so that when the detection component 20 is matched and connected with the infusion tube made of a flexible material, the part to be detected 1 and the detection component 20 are tightly matched and connected through the sealing structure 25, which can prevent the infusion tube from being elastically deformed, resulting in poor sealing of the connection between the detection component 20 and the part to be detected 1. At the same time, a sealing structure 25 is also provided in the detection component 20, so that when the detection component 20 is sleeved on the infusion tube, the infusion tube is guided through the sealing structure 25, so as to facilitate a tight fitting connection between the infusion tube and the detection component 20.

[0052] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0053] The leak detection device includes a movable plate and a plurality of detection components; the plurality of detection components are arranged on the movable plate at intervals, each detection component is rotatably arranged around its central axis, and each detection component is movably arranged along its extension direction, each detection component has an air path channel, one end of the detection component along its moving direction is a mating end, the mating end has an air outlet connected to the air path channel, and a sealing structure is arranged at the air outlet, and the detection component is tightly connected with the to-be-detected part through the sealing structure. In the above-mentioned arrangement, the mating end is used to be matched and connected with the piece to be detected, and multiple pieces to be detected are clamped respectively. By controlling multiple detection components to rotate around their central axes and move along the extension direction of the detection components until each mating end is tightly matched and connected with the corresponding piece to be detected, the mating end of the detection component is matched and connected with the piece to be detected after rotation and movement, and the gap between the air outlet of the mating end and the opening of the piece to be detected is sealed by the sealing structure, so that the air outlet of the mating end is connected with the opening of the piece to be detected, thereby making the sealing effect between the detection component and the piece to be detected better, and preventing air leakage between the detection component and the piece to be detected, resulting in poor detection effect; and then controlling the detection air source to flow out from the air outlet through the air path channel and then flow into the piece to be detected, so that after the air pressure in the piece to be detected reaches a preset value, the detection air source is controlled to be disconnected, and then after a period of time, the change of the air pressure in the piece to be detected is detected, and then the leakage of the piece to be detected is known, so as to solve the problem of low detection efficiency and easy error in the prior art of detecting blockage and leakage of the infusion catheter of the infusion set.

[0054] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0055] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0056] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0057] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0058] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A leak detection device, characterized in that: include: Movable plate (10); A plurality of detection components (20) are arranged on the movable plate (10) at intervals, each of the detection components (20) is rotatably arranged around its central axis, and each of the detection components (20) is movably arranged along its extension direction, each of the detection components (20) has an air path (24), one end of the detection component (20) along its moving direction is a mating end (26), the mating end (26) has an air outlet (22) connected to the air path (24), and a sealing structure (25) is provided at the air outlet (22), and the detection component (20) is connected to the component to be detected (1) through the sealing structure (25).

2. The leak detection device according to claim 1, characterized in that: The leak detection device also includes: A plurality of connecting components (41) are connected to the plurality of detecting components (20) in a one-to-one correspondence; A plurality of guide sleeves (42) are respectively arranged in one-to-one correspondence with the plurality of connecting components (41); the connecting components (41) are telescopically arranged in the guide sleeves (42) and rotatably arranged around the central axis of the guide sleeves (42), so as to drive the detection component (20) to move along the extension direction of the guide sleeves (42) and rotate around the central axis of the guide sleeves (42) through the connecting components (41).

3. The leak detection device according to claim 2, characterized in that: A spiral guide groove (420) is provided on the guide sleeve (42) along its extension direction and around the central axis of the guide sleeve (42), and a connecting protrusion (410) is provided on the connecting component (41). The connecting protrusion (410) is movably inserted into the spiral guide groove (420) along the extension direction of the spiral guide groove (420), so that the connecting component (41) drives the detection component (20) to move along the extension direction of the guide sleeve (42) and rotate around its own axis.

4. The leak detection device according to claim 2, characterized in that: The leak detection device also includes: A plurality of first driving components (30) are respectively arranged in one-to-one correspondence with the plurality of detection components (20); A plurality of first mounting plates (40) are respectively arranged on the movable plate (10) at intervals and are arranged one-to-one corresponding to the plurality of guide sleeves (42); a driving end of the first driving component (30) is connected to a floating joint (31); a first through hole is provided on the first mounting plate (40); the first through hole is communicated with the guide sleeve (42); the floating joint (31) can be movably passed through the first through hole and the guide sleeve (42) and then connected to the connecting component (41), so that the first driving component (30) drives the connecting component (41) to move so as to drive the detection component (20) to move.

5. The leak detection device according to claim 1, characterized in that: The leak detection device also includes: A second mounting plate (50) is arranged on the movable plate (10); A plurality of fixed sleeves (51) are arranged on the second mounting plate (50) at intervals, and a plurality of second through holes are arranged on the second mounting plate (50), and each of the second through holes is connected to the plurality of fixed sleeves (51) in a one-to-one correspondence. The detection component (20) can telescopically pass through the fixed sleeves (51) and the second through holes, so that the detection component (20) drives the air outlet (22) to move along the extension direction of the fixed sleeve (51) until it is connected to the component to be detected (1).

6. The leak detection device according to claim 1, characterized in that: An air intake pipe joint (23) is provided on the detection component (20), and the air intake pipe joint (23) is located on one side of the detection component (20) along its extension direction. The air intake pipe joint (23) has an air intake port (21), and the air intake port (21) is connected to the air path channel (24).

7. The leak detection device according to claim 1, characterized in that: The sealing structure (25) is a partial channel section of the gas path channel (24) close to the gas outlet (22), and the opening diameter of the sealing structure (25) gradually decreases in the direction away from the gas outlet (22) in the detection component (20).

8. The leak detection device according to claim 1, characterized in that: The leak detection device also includes: A second driving component (60); A fixed seat (70), the movable plate (10) is movably arranged relative to the fixed seat (70), the driving end of the second driving component (60) is connected to the connecting block (61), and the connecting block (61) is connected to the movable plate (10), so that the movable plate (10) is driven by the second driving component (60) to move relative to the fixed seat (70), so as to drive the air outlets (22) of the plurality of detection components (20) to move to contact the plurality of components to be detected (1) respectively.

9. The leak detection device according to claim 8, characterized in that: The leak detection device also includes: Two guide rails (71) are respectively arranged on the fixing seat (70) at intervals; A plurality of sliders (72) are respectively connected to the movable plate (10), and the plurality of sliders (72) are respectively slidably arranged on the two guide rails (71) along the extension direction of the guide rails (71), so that the second driving component (60) drives the movable plate (10) to move along the extension direction of the guide rails (71).

10. The leak detection device according to claim 9, characterized in that: The fixing seat (70) is provided with a movable groove, and the movable groove is located between the two guide rails (71). The connecting block (61) passes through the movable groove and is connected to the movable plate (10). The connecting block (61) is movably arranged along the extension direction of the movable groove, and the extension direction of the movable groove is parallel to the extension direction of the guide rail (71).

11. The leak detection device according to claim 6, characterized in that: The leak detection device also includes: A plurality of control valves (80) are respectively arranged in one-to-one correspondence with the plurality of detection components (20); A plurality of pressure reducing valves (81) are respectively arranged in one-to-one correspondence with the plurality of control valves (80); one end of the pressure reducing valve (81) is connected to a detection gas source, and the other end of the pressure reducing valve (81) is connected to the control valve (80); the control valve (80) is connected to the gas inlet (21) on the detection component (20), so that the pressure of the gas entering the detection component (20) is controlled through the pressure reducing valve (81), and the on-off of the detection gas source is controlled through the control valve (80).

12. The leak detection device according to claim 11, characterized in that: The leak detection device also includes: A plurality of pressure sensors (82) are provided corresponding to the plurality of control valves (80) respectively. Each of the pressure sensors (82), each of the control valves (80) and the air inlet (21) on each of the detection components (20) are connected via a three-way connector (83). The pressure sensor (82) is used to detect the pressure of the gas entering the detection component (20).

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